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pxi6733: allow to set the sampling frequency

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This commit is contained in:
Yann Sionneau 2015-06-03 00:30:59 +02:00
parent 59b339462c
commit 140239fee4
1 changed files with 4 additions and 2 deletions
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6
artiq/devices/pxi6733/driver.py
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@ -39,7 +39,7 @@ class DAQmx:
return False
return True
def load_sample_values(self, values):
def load_sample_values(self, sampling_freq, values):
"""Load sample values into PXI 6733 device.
This loads sample values into the PXI 6733 device and then
@ -49,6 +49,7 @@ class DAQmx:
A callback is registered to clear the task (deallocate resources)
when the task has completed.
:param sampling_freq: The sampling frequency in samples per second.
:param values: A numpy array of sample values to load in the device.
"""
@ -56,7 +57,8 @@ class DAQmx:
t.CreateAOVoltageChan(self.device+b"/"+self.analog_output, b"",
min(values), max(values),
self.daq.DAQmx_Val_Volts, None)
t.CfgSampClkTiming(self.clock, 1000.0, self.daq.DAQmx_Val_Rising,
t.CfgSampClkTiming(self.clock, sampling_freq,
self.daq.DAQmx_Val_Rising,
self.daq.DAQmx_Val_FiniteSamps, len(values))
num_samps_written = self.daq.int32()
values = np.require(values, dtype=float,